WO2006094446A1

WO2006094446A1 - A method for achieving the resource reservation for agent request mode in ngn

Info

Publication number: WO2006094446A1
Application number: PCT/CN2006/000280
Authority: WO
Inventors: Enhui Liu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2005-03-08
Filing date: 2006-02-27
Publication date: 2006-09-14
Also published as: EP1858211A1; EP1858211A4; CN1832449A; US7647406B2; CN100349445C; US20080256237A1

Abstract

A method for achieving the resource reservation for agent request mode in NGN comprises the steps as follows. The application function entity sends the resource request carrying the resource request parameter information desired by the user to the resource mediation policy determination function entity, and the resource mediation policy determination function entity makes the determination for allowing to enter according to the operating policy rule, the user configuration documents, and the resource availability. If allowing to enter, the resource mediation policy determination function entity sends the install command for entering to BGF (boundary gateway function) entity, and the enter determination parameter information is set and stored in the boundary gateway function entity. The BGF entity controls the forward manner for the user flow entering the network based on the enter determination parameter information entity such that the service quality level desired by the user can be ensured. The present invention can support the terminals having various service quality negotiation capacity, and can negotiate the service quality requirement parameter of the media stream or the said service quality requirement parameter determined by the application function entity according to the media stream type and the service operation policy.

Description

Method for realizing proxy request mode resource reservation in next generation network

Technical field

The present invention relates to the field of network communication technologies, and in particular, to a method for implementing proxy request mode resource reservation in a next generation network. Background of the invention

In NGN (Next Generation Network), IP and other packet technologies are used as bearer network technologies to integrate fixed communication and mobile communication. An NGN network is a converged network that carries a variety of telecommunication services such as voice, image and data through IP connectivity between communication entities. Although NGN has begun to deploy, the quality of service, security, reliability, operational and manageability of IP bearer networks is still looking forward to a complete solution.

The two international standards organizations, ITU-T (International Telecommunication Union) and ETSI (European Telecommunications Standards Institute), have set up special research groups dedicated to the development of NGN technical standards, which are currently in the framework stage. Resolving NGN bearer network quality of service, NAT (Network Address Translation) and firewall traversal through RACS (Resource and Admission Control System) is a consensus among most major operators and equipment vendors.

Although the scope of the RACS drafts of the two organizations is different, the ITU-T FGNGN considers the core network packet transmission part in addition to the access network packet transmission part, but the frameworks of the two organizations are similar and compatible. Both of them draw on 3GPP PDF (3rd Generation Mobile Communications Standardization Partner Project Rejoin Decision Function) and PacketCable GC (Gate Controller) to implement admission policy control based on operational policy rules at the edge of the network; The availability check result is used as one of the judgment conditions of the admission control to avoid congestion, delay and packet loss problems in the network that are unacceptable to the application layer due to the service traffic and the service level requirement exceeding the network bearer capability. Considerations for NAT and firewall traversal control; Both support for various NGN multimedia services are considered.

The framework definition in the current RACS draft is basically stable. The RACS functional framework needs to support multiple mode resource reservation mechanisms. There are three resource reservation modes:

(1) Proxy request mode

The service control device proxy user initiates a resource request to the resource and the admission control layer; the service control device may extract the bandwidth and service level requirement of the session media stream specified in the user service request signaling, or according to the service layer operation policy rule. (such as service type or codec type, etc.) to determine the bandwidth and service level requirements of this session media stream.

(2) User request mode

The resource request is directly sent to the network by the CPE (the customer premises equipment) through the dedicated path coupling signaling; the resource request may be initiated for each session or may be independent of the session; the resource request may be a pre-service The control device is authorized, or it may be pre-authorized without the service control device.

(3) Access configuration mode

The network access management device initiates a resource request to the network according to user service level agreement information contained in the user profile when the user accesses the network; the resource request is user-level and has nothing to do with the session.

In the latest draft of the RACS published by ITU-T FGNGN in December 2004, the functional framework of the RACS is provided, as shown in Figure 1. In Figure 1:

The application function (AF) refers to a service layer function entity that needs to reserve and release resources for the application media stream requesting resources and admission control, including: Service Control Agent Function (SCPF) and interconnection boundary control function (old CF), etc. Functional entity.

The Network Access Attachment Function (NAAF) refers to functions related to network access management control, including: network access authentication of user equipment, dynamic allocation of authorization and IP address, configuration of access equipment, and storage of user profile. The resource arbitration (RM) receives the resource reservation request, checks whether the resource reservation request conforms to the operation policy rule, and interacts with the related functional entity to check whether the user configuration information stored in the user configuration database is met and whether the network meets the requirements. The delivery resources are available freely, and then an admission decision is made based on these inspection results. The resource arbitration function entity includes: an arbitration policy decision function entity (M-PDF) located on the service access side, and an interconnection policy decision function entity (I-PDF) located on the service interconnection side.

The transmission resource control function (TRCF) receives the resource request from the resource arbitration, checks whether the transmission resource that meets the resource request is available in the network according to the collected network topology and resource state data, and controls the transmission device in the network. Guarantee the forwarding behavior related to quality of service. If there are multiple transport resource control functional entities in a network, they communicate with each other to check the resource availability from the ingress edge to the egress edge in the entire network. The transport resource control function entity includes: a transport resource functional entity (A-TRCF) located in the access network, and a transport resource functional entity (C-TRCF) located in the core network.

The border gateway function (BGF) of the core network receives, stores, and performs the admission decision parameter information from the resource and the admission control layer, and performs packet filtering, traffic classification, labeling, supervision, and shaping according to the parameter information, and may also report Text network address translation and security detection filtering.

In this draft, the description of functional entities and interface requirements is mainly around the proxy request mode, but does not provide complete interface requirements and corresponding processing procedures to achieve resource reservation in the proxy request mode.

The functional framework of the RACS is also provided in the latest draft of the RACS published by ETSI TISPAN in January 2005, as shown in Figure 2. In Figure 2:

Application Function (AF) refers to a business layer functional entity that needs to reserve and release resources for application media streams to resource and admission control requests.

Network Subsystem (NASS) refers to the functions related to network access management control. Including: network access authentication of user equipment, dynamic allocation of authorization and IP address, configuration of access equipment, and storage of user profile.

The service policy decision function (SPDF) receives the resource reservation request, checks whether the resource reservation request complies with the operation policy rule, and interacts with the access network resource admission and control function (A-RACF) to check whether there is a match in the access network. The required delivery resources are available freely, and then an admission decision is made based on these inspection results.

The Access Network Resource Admission and Control Function (A-RACF) receives resource requests from the SPDF, checks if there are eligible transmission resources available in the access network, and controls the access to the transport equipment in relation to the guaranteed quality of service. Forwarding behavior.

The border gateway function (C-BGF) of the core network receives, stores, and performs admission decision parameter information from the resource and admission control layer, and performs packet filtering, traffic classification, labeling, supervision, and shaping based on the parameter information, and possibly Perform network address translation and security detection filtering of packets.

In this draft, the description of functional entities and interface requirements is mainly around the proxy request model, but it also does not provide complete interface requirements and corresponding processing flow. Summary of the invention

In view of the above problems in the prior art, an object of the present invention is to provide a method for realizing proxy request mode resource reservation in a next generation network, so that the existing RACS function framework can implement resource reservation in the proxy request mode. deal with.

The object of the invention is achieved by the following technical solutions:

The present invention provides a method for implementing proxy request mode resource reservation in a next generation network, including:

The application function entity sends a resource request message to the resource arbitration policy decision function entity, where the message carries the resource request parameter information required by the user; After receiving the resource request message, the resource arbitration policy decision function entity checks whether the user profile and the network operation policy rule are met, and checks whether there is a resource available in the transport network that meets the requirement, and the resource request is made according to the check result. Get out of the way,

If the admission is passed, the resource arbitration policy decision entity sends an admission installation command to the border gateway function entity, and sets and saves the corresponding admission decision parameter on the border gateway function entity. The boundary gateway function entity according to the admission decision parameter information, Forward the user traffic entering the network.

The method for implementing the proxy request mode resource reservation in the next generation network further includes: the application function entity sends a resource modification request message to the resource arbitration policy decision function entity, where the message carries the reserved resource information required after the modification;

After receiving the resource modification request message, the resource arbitration policy decision function entity checks whether the user profile and the network operation policy rule are met, and checks whether there is a resource available in the transport network that meets the requirement, and the resource modification request according to the check result. Make an access decision;

If the admission is passed, the resource arbitration policy decision function entity sends an access modification command to the border gateway function entity, and the corresponding admission decision parameter table is modified on the border gateway function entity.

The border gateway function entity forwards and processes the user traffic entering the network according to the modified admission decision parameter information.

The method for implementing the proxy request mode resource reservation in the next generation network further includes: after receiving the resource request or the resource modification request message, the resource arbitration policy decision function entity interacts with the network access auxiliary function entity, and the user Information is checked.

The method for implementing proxy request mode resource reservation in the next generation network further includes: After receiving the resource request or resource modification request message, the resource arbitration policy decision function entity obtains network operation policy rule information in a local or remote entity, and determines a policy decision according to the network operation policy rule information.

The method for implementing the proxy request mode resource reservation in the next generation network further includes: after receiving the resource request or the resource modification request message, the resource arbitration policy decision function entity interacts with the transmission resource control function entity to perform resource availability check. .

The method for implementing proxy request mode resource reservation in the next generation network further includes: the application function entity sends an admission activation or stop request message to the resource arbitration policy decision function entity, where the message carries a resource request parameter that needs to be activated or stopped. Information or its identification information;

After receiving the message, the resource arbitration policy decision function entity sends an access activation or stop command to the border gateway function entity, where the command carries the access decision parameter information or its identification information that needs to be activated or stopped;

After receiving the command, the border gateway function entity activates or stops processing the corresponding admission decision parameter information.

The method for implementing proxy request mode resource reservation in the next generation network further includes: the border gateway function entity determines the admission decision parameter information, modifies the admission decision parameter information, or activates/stops/deletes the corresponding admission decision. After the parameter information, an acknowledgment message is returned to the resource arbitration policy decision function entity, and the resource arbitration policy decision function entity sends a corresponding response message to the application function entity.

The method for implementing proxy request mode resource reservation in the next generation network further includes:

A, the application function entity sends a resource release request message to the resource arbitration policy decision function entity, where the message carries the access decision parameter information or its identification information that needs to be released;

B. The resource arbitration policy decision function entity sends an admission deletion or stop command to the border gateway function entity, and the command carries the access decision parameter information or its identification letter that needs to be released. C. The border gateway function entity deletes or stops the corresponding admission decision parameter information.

The step C described further includes:

After the C1, the border gateway function entity deletes or stops the corresponding admission decision parameter information, returns a confirmation message to the resource arbitration policy decision function entity;

After receiving the acknowledgement message, the C2, the resource arbitration policy decision function entity sends a resource release indication message to the transport resource control function entity, where the message carries the access decision parameter information or its identification information that needs to be released;

C3. After receiving the message, the transmission resource control function entity modifies the saved resource allocation information.

The step C2 further includes:

After receiving the acknowledgement message, the resource arbitration policy decision function entity sends a resource release response message to the application function entity.

The method for implementing resource reservation in the proxy request mode in the next generation network further includes: when the border gateway function entity determines that the resource is unavailable, sending a resource unavailable indication message to the resource arbitration policy decision function entity;

After receiving the message, the resource arbitration policy decision function entity sends an admission deletion indication message to the resource transmission resource control function entity, and sends a resource release indication message to the application function entity;

After receiving the message, the transmitting resource control function entity changes its saved resource allocation information; after receiving the message, the application function entity releases the corresponding session.

The method for implementing resource reservation in the proxy request mode in the next generation network further includes: when the resource transmission resource control function entity determines that the resource is unavailable, sending a resource unavailable indication message to the resource arbitration policy decision function entity;

After receiving the message, the resource arbitration policy decision function entity sends the message to the application function entity. The resource is unavailable to indicate the message, and sends an admission delete or stop command to the border gateway function entity;

After the application function entity receives the message, the corresponding session is released, and after receiving the command, the border gateway function entity deletes or stops the corresponding admission decision parameter information.

It can be seen from the technical solution provided by the present invention that the present invention can support terminals of various quality of service negotiation capabilities without changing the service negotiation process.

Moreover, in the service negotiation process, the service quality requirement parameter of the media stream may be negotiated by using the present invention, and the service quality requirement parameter of the media stream may be determined by the service control device (ie, the application function entity) according to the media stream type and the service operation policy. .

The application function entity initiates the resource request directly to the NGN resource and the admission by the proxy mode, instead of the user, avoiding the additional authentication process for the legality of the resource request, simplifying the process of resource authorization processing, and naturally implementing the service layer and the transport layer. Coordination and synchronization. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic diagram of a system frame structure of a RACS provided by an ITU-T FGNGN; FIG. 2 is a schematic diagram of a system frame structure of a RACS provided by ETSI TISPAN; FIG. 3 is a schematic flowchart of a process of an AF-initiated resource reservation request according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a process flow of an AF originating resource reservation modification request according to an embodiment of the present invention; FIG.

FIG. 5 is a schematic flowchart of a process for an AF to initiate an admission activation request according to an embodiment of the present invention; FIG.

6 is a schematic flowchart of a process of an AF initiating an admission stop request according to an embodiment of the present invention;

FIG. 7 is a flowchart of a process of an AF originating resource release request according to an embodiment of the present invention; Figure

FIG. 8 is a schematic diagram of a processing flow of an indication of resource unavailability reported by a BGF according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of a process flow of reporting a resource unavailability indication by a TRCF according to an embodiment of the present invention. Mode for carrying out the invention

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.

The core of the present invention is to provide a processing method for resource reservation in the case where the NGN resource and the admission control system support the proxy request mode.

The resource reservation method of the proxy request mode can support terminals of various quality of service negotiation capabilities without changing the service negotiation process. The service quality requirement parameter of the media stream may be negotiated in the service negotiation process, and the service quality requirement parameter of the media stream may be determined by the service control device according to the media stream type and the service operation policy. The service control device initiates a resource request to the NGN resource and the admission by proxy, avoids the additional authentication process for the legality of the resource request, simplifies the process of the resource authorization process, and naturally realizes the cooperation between the service layer and the transport layer. Synchronize.

The invention provides a processing method for an NGN resource and admission control system to support proxy request mode resource reservation. Since the RACS functional framework of ETSI TISPAN corresponds to the access part of the RACS framework of ITU-T FGNGN and is a compatible subsystem, the present invention is described based on the RACS framework of ITU-T FGNGN. However, those skilled in the art will appreciate that the methods and processes provided by the present invention are also applicable to the RACS framework of ETSI TISPAN, in which the NASS (Network Attachment Subsystem) initiates a resource request and is PDF-enabled. Access control is implemented, and the corresponding access decision parameter information is still stored on the BGF; In the RACS functional framework, the TRCF corresponds to the A-RACF in the system. In the present invention, the service control device proxy user initiates a resource request to the resource and the admission control system, and the service control device includes a call proxy in the softswitch system, and P- in the 3GPP IMS (IP Multimedia Service Subsystem). CSCF (Proxy Call Session Control) and more. In the present invention, a service control device having a resource request function is referred to as an AF (Application Function) entity. The event that triggers the AF to initiate a resource request includes a session establishment process, a media renegotiation process, or an internal behavior. The AF may extract the bandwidth and the quality of service level requirement of the session media stream negotiated in the user service request signaling, or determine the bandwidth and service level requirement of the session media stream according to the service operation policy rule, where the service operation is performed. Policy rules can be business type or media stream characteristics, and so on. In the present invention, a specific implementation manner of a method for implementing proxy request mode resource reservation in the next generation network is as shown in FIG. 3, that is, a corresponding NGN resource and admission control subsystem processes a resource request for AF. As shown in FIG. 3, the following steps are specifically included:

Step 31: The AF sends a resource request message to the resource arbitration PDF, where the resource request message carries resource information that needs to be reserved;

The resource information that needs to be reserved includes: a media stream identifier (such as IP quintuple information), a bandwidth requirement parameter, and a quality of service requirement parameter, and according to the information, the corresponding admission decision parameter information may be determined;

Step 32: Resource Arbitration PDF interacts with the NAAF, which is responsible for maintaining user information, to perform user information check. The user information to be checked includes user configuration information and authorization information related to service quality.

Step 33: Resource Arbitration After checking the user information, you need to make policy decisions according to the network operation policy rules.

The resource arbitration PDF can use the locally stored network operation policy rules, The network operation policy saved in the policy data storage can be remotely queried to make corresponding policy decisions to determine whether the requirements of the corresponding network operation policy rules are met, and if yes, the resource availability check is continued; otherwise, the resource request is directly rejected;

Step 34: The resource arbitration PDF interacts with the TRCF to perform resource availability check; the resource arbitration PDF interacts with the transport resource control function entity responsible for network performance control, and when the transport resource availability check is performed, the resource arbitration PDF needs to select a resource according to the resource request information. The related access network on the path and the TRCF of the core network, and then forward the resource request to the corresponding TRCF, and perform resource availability check in the network, and the TRCF returns the resource availability check result to the resource arbitration PDF;

In order to control and guarantee network performance, TRCF may also perform state collection and parameter configuration on the routing and forwarding behavior of network transmission equipment;

Step 35: The PDF performs an admission control decision on the resource request;

That is, the resource arbitration PDF receives the resource request from the BGF, and performs the admission control decision according to the network operation policy rule, the user profile, and/or the resource availability check result, and after determining the admission, step 36 is performed;

Of course, if the result of the admission control decision is forbidden, the resource arbitration PDF directly returns a resource request response message containing the reason for the rejection to the AF;

Step 36: After receiving the access installation command returned by the resource arbitration PDF, the BGF locally installs the admission control decision result, and processes the data traffic according to the result;

The result of the admission control decision is the admission decision parameter information, including user identification (such as IP quintuple), bandwidth requirement information, and priority information;

Saving the admission decision parameter information on the BGF;

Step 37: The BGF returns an installation confirmation message to the resource arbitration PDF;

Step 38: After receiving the installation confirmation message, the resource arbitration PDF also needs to send a resource request response message to the AF to notify the AF resource request processing result. In the present invention, the AF may also initiate the modification of the resource reservation during the session, including modifying the address, the bandwidth, and the quality of service level. The event that triggers the AF to initiate the resource reservation modification includes the media renegotiation process or the internal behavior. The processing flow of the resource modification request initiated by the NGN resource and the admission control system to the AF is as shown in FIG. 4, and specifically includes the following steps:

Step 41: The AF sends a resource modification request message to the resource arbitration PDF, where the resource modification request message carries resource information that needs to be reserved after modification;

The resource information that needs to be reserved after the modification includes: a media stream identifier (such as IP quintuple information), a bandwidth requirement parameter, and a service shield quantity requirement parameter, and the access decision parameter information corresponding to the information may be determined according to the information. And modify it;

Step 42: Resource Arbitration The PDF interacts with the NAAF (Network Access Attachment Function), which is responsible for maintaining user information, and performs user information check. The checked user information includes user configuration information and authorization information related to the quality of service;

Step 43: After the resource arbitration PDF checks the user information, it also needs to make a policy decision according to the network operation policy rule, and after the policy decision allows, continue the subsequent processing process; Step 44: The resource arbitration PDF interacts with the TRCF for resource availability. Inspection; after the resource availability check is passed, the subsequent processing is continued;

Step 45: The PDF performs an admission control decision on the resource modification request.

That is, the resource arbitration PDF receives the resource modification request from the BGF, and performs the admission control decision according to the network operation policy rule, the user profile, and/or the resource availability check result, and after determining the admission, step 46 is performed;

Of course, if the result of the admission control decision is forbidden, the resource arbitration PDF directly returns a resource modification request response message containing the reason for the rejection to the AF;

Step 46: After receiving the access installation command returned by the resource arbitration PDF, the BGF locally installs the admission control decision result, and processes the data traffic according to the result;

The result of the admission control decision is the admission decision parameter information, including the user identifier. (such as IP quintuple), bandwidth demand information, and quality of service parameter information;

The BGF modifies and saves the corresponding admission decision parameter information;

Step 47: The BGF returns an installation confirmation message to the resource arbitration PDF;

Step 48: Resource Arbitration After receiving the installation confirmation message, the PDF also needs to send a resource modification request response message to the AF to notify the AF resource modification request processing result. When the media stream is renegotiated during the multimedia session, and when services such as call waiting are handled, the NGN resource and the admission control system allow the AF to directly initiate an "admission activation request", and the BGF (Border Gateway Function) is started by the resource arbitration PDF request. Execute Resource Arbitration PDF The result of admission control decisions for authorized resources. The processing flow of the "access activation request" initiated by the NGN resource and the admission control system to the AF is shown in FIG. 5.

Step 51: After the AF determines that an event that needs to activate the corresponding admission decision parameter occurs, the AF sends an admission activation request message to the resource arbitration PDF;

The admission activation request message needs to carry the admission decision parameter information or its identification information that needs to be activated;

Step 52: Resource Arbitration After receiving the admission activation request message, the PDF sends an admission activation command to the BGF.

The admission activation command carries the admission decision parameter information or the identification information that needs to be activated, so that the BG F determines the admission decision parameter that needs to be activated;

Step 53: After receiving the admission activation command, and performing corresponding activation processing, the BGF returns an activation confirmation message to the resource arbitration PDF.

After determining that the corresponding admission decision parameter information is activated, it can be used as a basis for controlling the corresponding service flow;

Step 54: After receiving the activation confirmation message, the resource arbitration PDF returns an activation response message to the AF, and notifies the AF of the activation processing result for the corresponding admission decision parameter. In the present invention, when the media stream is renegotiated during the multimedia session, and the call waiting service is processed, the NGN resource and the admission control system allow the AF to directly initiate the admission stop request, and the BGF stops the execution of the resource arbitration through the resource arbitration PDF. The result of the admission control decision of the authorized resource; the processing method of the admission stop request initiated by the NGN resource and the admission control system to the AF is as shown in FIG. 6 , and specifically includes the following steps:

Step 61: After the AF determines that an event that needs to stop the corresponding admission decision parameter occurs, the AF sends an admission stop request message to the resource arbitration PDF;

The admission stop request message needs to carry the admission decision parameter information or its identification information that needs to be stopped;

Step 62: Resource Arbitration PDF After receiving the admission stop request message, the PDF sends an admission stop command to the BGF;

The admission stop command carries the admission decision parameter information or the identification information that needs to be stopped, so that the BGF determines the admission decision parameter that needs to be stopped;

Step 63: After receiving the admission stop command, and after performing the corresponding stop processing, the BGF returns a stop confirmation message to the resource arbitration PDF.

After determining that the corresponding admission decision parameter information is stopped, it is no longer used as a basis for controlling the corresponding service flow;

Step 64: Resource Arbitration After receiving the stop confirmation message, the PDF returns a stop response message to the AF, and notifies the AF of the stop processing result for the corresponding resource reservation parameter.

The AF should initiate the release of the resource reservation at the end of the session. In order to support the media renegotiation process in the multimedia session process, the AF can also initiate a "resource release request" during the session. The NGN resource and admission control system handles the AF-initiated "resource release request" as shown in Figure 7. Specifically, the following steps are included:

Step 71: After the AF releases the corresponding session, the resource release request message needs to be sent to the resource arbitration PDF; The resource release request message carries the admission decision parameter information or the identification information that needs to be released, so as to determine the admission decision that needs to be released;

Step 72: Resource Arbitration After receiving the resource release request, the PDF sends an access deletion or stop command to the BGF.

The command carries the admission decision parameter information or its identification information that needs to be deleted or stopped;

Step 73: After the BGF deletes or stops the corresponding admission decision parameter information, the BGF returns a delete or stop confirmation message to the resource arbitration PDF.

Step 74: Resource Arbitration After receiving the acknowledgement message, the PDF needs to send an admission deletion indication message to the TRCF, so that the TRCF releases the resource information previously allocated for the corresponding user.

Step 75: After that, the resource arbitration PDF also needs to send a resource release response message to the AF. In the present invention, during the session, when the bandwidth resource cannot be reserved for the reserved resource due to the interface failure of the BGF, the BGF should actively issue a resource unavailability indication to the resource arbitration PDF, if the resource reservation is related to the session. The PDF may be triggered to send a resource unavailable indication to the AF, and the corresponding processing flow is as shown in FIG. 8 , which specifically includes the following steps:

Step 81: When the BGF determines that the resource is unavailable, delete or stop the corresponding admission decision parameter information, and send a resource unavailable indication to the resource arbitration PDF;

Step 82: After receiving the resource unavailable indication, the resource arbitration PDF sends an admission deletion indication to the TRCF, so that the TRCF modifies the resource information previously allocated for the corresponding user. Step 83: The resource arbitration PDF receives the After the resource unavailability indication, the resource arbitration PDF also needs to send a resource unavailability indication to the AF, so that the AF releases the corresponding session. In the present invention, during the session, when the TRCF detects that the bandwidth resource cannot be reserved for the authorized resource involved due to a failure in the network, etc., the TRCF should actively provide the resource. The source arbitration PDF sends a resource unavailability indication; if the resource reservation is related to the session, the PDF may be triggered to send a resource unavailability indication to the AF, and the corresponding processing flow is as shown in FIG. 9, which specifically includes the following steps:

Step 91: When the TRCF determines that the resource is unavailable, sending a resource unavailable indication to the resource arbitration PDF;

Step 92: Resource Arbitration After receiving the resource unavailability indication, the PDF sends a resource unavailability indication to the AF;

Step 93: Resource Arbitration After receiving the resource unavailability indication, the PDF also sends an admission deletion or stop command to the BGF;

Step 94: After deleting or stopping the corresponding admission decision parameter information, the BGF returns a delete or stop confirmation message to the resource arbitration PDF.

In summary, the present invention provides an implementation scheme of resource reservation in a proxy request mode. The present invention enables the terminal to support various quality of service negotiation capabilities without changing the business negotiation process. Moreover, the service control device initiates the resource request directly to the NGN resource and the admission by the proxy instead of the user, which avoids the additional authentication process for the legality of the resource request, simplifies the resource authorization processing flow, and naturally implements the service layer and the transmission. Coordination and synchronization between layers.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

A method for implementing proxy request mode resource reservation in a next generation network, characterized in that:

The application function entity sends a resource request message to the resource arbitration policy decision function entity, where the message carries the resource request parameter information required by the user;

After receiving the resource request message, the resource arbitration policy decision function entity checks whether the user profile and the network operation policy rule are met, and checks whether there is a resource available in the transport network that meets the requirement, and the resource request is made according to the check result. Approved

If the admission is passed, the resource arbitration policy decision entity sends a quasi-entry command to the border gateway function entity, and sets and saves corresponding admission decision parameter information on the border gateway function entity; the border gateway function entity according to the admission decision parameter Information, forwarding the user traffic entering the network.

The method for implementing proxy request mode resource reservation in the next generation network according to claim 1, wherein the method further comprises:

The application function entity sends a resource modification request message to the resource arbitration policy decision function entity, where the message carries the reserved resource information required for modification;

If the admission is passed, the resource arbitration policy decision function entity sends an admission modification command to the border gateway function entity, and the corresponding admission decision parameter letter is modified on the border gateway function entity. The border gateway function entity forwards and processes the user traffic entering the network according to the modified admission decision parameter information.

The method for implementing the proxy request mode resource reservation in the next generation network according to claim 1 or 2, wherein the method further comprises:

After receiving the resource request or the resource modification request message, the resource arbitration policy decision function entity interacts with the network access accessory function entity to check the user information.

The method for implementing proxy request mode resource reservation in the next generation network according to claim 1 or 2, wherein the method further comprises:

After receiving the resource request or the resource modification request message, the resource arbitration policy decision function entity acquires network operation policy rule information in a local or remote entity, and determines a policy decision according to the network operation policy rule information.

After receiving the resource request or the resource modification request message, the resource arbitration policy decision function entity interacts with the transfer resource control function entity to perform resource availability check.

The method for implementing the proxy request mode resource reservation in the next generation network according to claim 1, wherein the method further comprises:

The application function entity sends an admission activation or stop request message to the resource arbitration policy decision function entity, where the message carries the resource request parameter information that needs to be activated or stopped, or its identification resource, the arbitration policy decision function entity receives the message, and then The border gateway function entity sends an admission activation or stop command, and the command carries the admission decision parameter information or its identification information that needs to be activated or stopped;

The method for implementing the proxy request mode resource reservation in the next generation network according to claim 1, 2 or 6, wherein the method further comprises:

After the boundary gateway function entity determines the admission decision parameter information, modifies the admission decision parameter information, or activates/deactivates/deletes the corresponding admission decision parameter information, returns an acknowledgement message to the resource arbitration policy decision function entity, and the The resource arbitration policy decision function entity sends a corresponding response message to the application function entity.

A. The application function entity sends a resource dry request message to the resource arbitration policy decision function entity, where the message carries the access decision parameter information or its identification information that needs to be released;

B. The resource arbitration policy decision function entity sends an admission deletion or stop command to the border gateway function entity, and the command carries the access decision parameter information or its identification letter that needs to be released.

C. The border gateway function entity deletes or stops the corresponding admission decision parameter information.

The method for implementing resource reservation in the proxy request mode in the next generation network according to claim 8, wherein the step C further comprises:

After the Cl, the border gateway function entity deletes or stops the corresponding admission decision parameter information, returns a confirmation message to the resource arbitration policy decision function entity;

After receiving the acknowledgement message, the resource arbitration policy decision function entity sends a resource release indication message to the transport resource control function entity, where the message carries the access decision parameter information or its identification information that needs to be released;

The method for implementing resource reservation in the proxy request mode in the next generation network according to claim 9, wherein the step C2 further includes: After receiving the acknowledgement message, the resource arbitration policy decision function entity sends a resource release response message to the application function entity.

The method for implementing resource reservation in the proxy request mode in the next generation network according to claim 1, wherein the method further comprises:

Sending a resource unavailable indication message to the resource arbitration policy decision function entity when the border gateway function entity determines that the resource is unavailable;

After receiving the message, the resource arbitration policy decision function entity sends an admission deletion indication message to the resource transmission resource control function entity, and sends a resource release indication to the application function entity, after the transmission resource control function entity receives the message, Modifying the saved resource allocation information; after the application function entity receives the message, releasing the corresponding session.

The method for implementing resource reservation in a proxy request mode in a next generation network according to claim 1, wherein the method further comprises:

And when the resource transmission resource control function entity determines that the resource is unavailable, sending a resource unavailable indication message to the resource arbitration policy decision function entity;

After receiving the message, the resource arbitration policy decision function entity sends a resource unavailability indication message to the application function entity, and sends an admission deletion or stop command to the border gateway function entity;